Appalachian Basin Play Fairway Analysis: Revised 2016 Combined Risk Factor Analysis Combined Risk Factor data upload

This submission contains information used to compute the combined risk factors for deep geothermal energy opportunities in the Appalachian Basin, in the context of a the Play Fairway Analysis project. The risk factors are sedimentary rock reservoir quality, thermal resource quality, potential for induced seismicity, and utilization for direct-use heating of neighborhoods. The methods used to combine the risk factors included taking the average, the geometric mean, and the minimum of the four risk factors. Combined risk maps are provided for three different sedimentary rock reservoir metrics. Combined risk maps are also provided for the three geologic risk factors alone (thermal, reservoir, and seismic), and for the three risk factors that exclude reservoir quality (utilization, seismicity, and thermal qualities).

The 2015 data submission should be visited to obtain associated shapefiles, which include: 1) definition of the High and Medium priority play fairways (Inner_Fairway, and Outer_Fairway), 2) definition of the US Census Places (usCensusPlaces), 3) places (cities) of interest in the region (Places_of_Interest) identified as geothermal play fairways, 4) the point centers of the raster cells (Raster_Center_Locations), and 5) locations of industries and special-use communities (e.g., colleges and military bases) identified as low temperature heat users (Industries).

The 2015 submission also includes: 1) a methodology memo that explains how the risk factors were combined (GPFA-AB_combining_risk_factors.pdf), 2) the earthquake-based seismic risk map, and 3) supporting information with details of the calculations or processing used in generating these data files. More details on each file are given in the spreadsheet "list_of_contents.xlsx" in the folder "Supporting_Information".

Code used to calculate values is available at under the folder "combining_metrics". Note that the 2016 code is currently under the branch named "combining_metrics_2016" in the folder called "combining_metrics". This branch may be merged with the master branch in the future.

Many files contained within this submission update and replace the indicated files contained in: Cornell University. (2015). Risk Factor Analysis in Low-Temperature Geothermal Play Fairway Analysis for the Appalachian Basin (GPFA-AB) [data set]. Retrieved from doi:10.15121/1261942 A list of all files contained within this submission is included in the file titled list_of_contents.csv

This folder contains information used to compute the risk factors for the GPFA-AB project. The file types in this upload consist of images, rasters, and supporting information. The image files show what the raster files should look like. An image of the raster will have the same name except .png as the file ending instead of .tif. The raster files contain the scaled risk factor data (on [0, 5] and [0, 3]) and the combined risk factor data.

The file About_GPFA-AB_Phase1RiskAnalysisTask5DataUpload.pdf contains information inclusive of references utilized and consulted, special use considerations, authorship, etc.

Note that some of the .tif files were updated with the 2016 data submission, along with their .png file. The 2015 data file names that these files update are listed in a column in list_of_contents.xlsx. Also note that the updated 2016 files had 3 different reservoir objectives. These are the Reservoir Productivity Index for water as the working fluid (RPIw), the Reservoir Productivity Index for gas (supercritical CO2) as the working fluid (RPIg), and the Reservoir Flow Capacity (RFC) for water as the working fluid. Results are presented with these abbreviated names in the file name.

Note that the thresholds that define the scaled values for the thermal risk factor and the reservoir risk factor changed from the 2015 to the 2016 data submission. The method for calculating the uncertainty of the seismic stress-based risk has also been updated.

Data and Resources

Metadata Source

Additional Info

Field Value
Citation Date 2016-11-15T00:00:00-07:00

Harvest Information

Original ID f0000000-58cc-4372-a567-000000000880
Index Date 2019-02-21T16:27:47-07:00
Original Format ISO-USGIN
Original Version 1.2


Name Teresa E. Jordan
Position primary contact
Organization Cornell University

Geographic Extent

North Bound 43.480232928639
South Bound 37.002775229137
East Bound -75.10113125
West Bound -82.736528125